APA Dictionary of Psychology

n. a form of electroconvulsive therapy (ECT) in which the amount of electricity, the duration of the shock, or both is sufficient to generate the tonic phase of a seizure but either limits or prevents the clonic phase. Electronarcosis is a generally less effective alternative to standard ECT and is more likely to cause side effects. The technique has also been used to induce relaxation and sleep. See electrosleep therapy.